“砹”的概念、定义、翻译、参考文献-科学参考

单词	砹
释义	砹 Encyclopedia 理学放射性元素释 astatine砹人工放射性元素，元素符号At，原子序数85，半衰期最长的同位素的质量数210，属周期系ⅦA族，卤族元素。英文名称来源于希腊文astatos（不稳定）。 Astronomy 全称：astatine。缩写：At砹 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 astatine砹
随便看	symmetric configuration symmetric connection symmetric continuous group symmetric coordinate symmetric coupling symmetric covariant tensor symmetric cryptographic algorithm symmetric cryptosystem symmetric cubic graph symmetric derivative symmetric derived number symmetric design symmetric determinant symmetric difference symmetric difference metric symmetric difference of events symmetric difference of graphs symmetric difference of sets symmetric differential form symmetric distance function symmetric distribution symmetric distribution function symmetric domain symmetric element symmetric encryption technique

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。